Bird perch alarm

Details Bird perch alarm Bird perch alarm

1976-01-16

1977-07-26

Swann, III, Glen R.

Communications: electrical

Systems

Call station

52101, 119 26, 340279, G08B 2100

Patent

active

040386392

ABSTRACT:
A bird perch alarm characterized by a perch assembly responsive to the weight of a bird, the movement thereof completing electrical circuitry and causing an audible signal. Resilient means form a part of the perch assembly, affording critical sensitivity to the bird's weight.

REFERENCES:
patent: 3041911 (1962-07-01), Marder
patent: 3847120 (1974-11-01), Hicks

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